CVE-2026-40980Network attack vector

Service interruption via unbounded PDF layout allocation

Published Apr 28, 2026 · Updated Apr 28, 2026

Resource exhaustion in Spring AI 1.0.0 through 1.0.5 and 1.1.0 through 1.1.4 allows remote authenticated users to interrupt service. ForkPDFLayoutTextStripper converts PDF-derived dimensions into char-array lengths and line counts without upper bounds, allowing malformed content to drive excessive memory allocation. Reachability requires a consuming application to pass user-supplied PDFs to a DocumentReader that uses the vulnerable text stripper; the resulting memory pressure can deny that application service.

CVSS severity6.5
Medium
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource exhaustion in Spring AI 1.0.0 through 1.0.5 and 1.1.0 through 1.1.4 allows remote authenticated users to interrupt service. ForkPDFLayoutTextStripper converts PDF-derived dimensions into char-array lengths and line counts without upper bounds, allowing malformed content to drive excessive memory allocation. Reachability requires a consuming application to pass user-supplied PDFs to a DocumentReader that uses the vulnerable text stripper; the resulting memory pressure can deny that application service.

The record

CVE
CVE-2026-40980
Published
Apr 28, 2026
Updated
Apr 28, 2026
Vendor
Spring
Product
Spring AI
Classifications
CWE-400, T1499.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 28, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 28, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.0.0 <1.0.6
  2. Affected versionversion=1.1.0 <1.1.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Spring · Spring AIversion=1.0.0 <1.0.6; version=1.1.0 <1.1.5

Published CVSS scores

6.5GitHub Advisory DatabaseCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-400Uncontrolled Resource Consumption
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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